US4401545A
Expired / Lapsed
US
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Electrically conductive polypyrrole derivatives
Assignee: BASF SE
•
Filing: 1981-12-21
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Granted: 1983-08-30
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Expires: 2001-12-21
Abstract
Abstract Electrically conductive complexes of polypyrroles with nitroaromatic anions are prepared by polymerizing pyrrole, an N-alkylpyrrole and/or an N-arylpyrrole by anodic oxidation in a polar solvent, in the presence of a salt of an acidic nitroaromatic compound.
Inventors
- 👤 Herbert Naarmann
- 👤 Dieter Naegele
- 👤 Klaus Penzien
- 👤 Johannes Schlag
- 👤 Volker Kiener
- 👤 Hugo Boehm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:09
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/60; C; C08; C08G; C08G61/00; C08G61/12; C08G61/122; C08G61/123; C08G61/124; C08G73/00; C08G73/06; C08G73/0605; C08G73/0611; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/127; H10; H10K; H10K85/00; H10K85/10; H10K85/111; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
11 words
An electrically conductive complex of a polypyrrole with a nitroaromatic anion.
Claim 2
Dependent Claim
11 words
An electrically conductive complex of a polypyrrole with a nitroaromatic anion.
Claim 3
Dependent Claim
21 words
An electrically conductive complex as claimed in claim 1, whose polypyrrole component is based on pyrrole, an N-alkylpyrrole and/or an N-arylpyrrole.
Claim 4
Dependent Claim
26 words
An electrically conductive complex as claimed in claim 1, whose nitroaromatic anion component is based on nitrophenol, a nitroaromatic carboxylic acid and/or a nitroaromatic sulfonic acid.
Claim 5
Dependent Claim
13 words
A film composed of the electrically conductive complex as claimed in claim 1.
References Cited (Backward Citations)
US2874079A
Cited
US2993946A
Cited
US3274212A
Cited
US3575889A
Cited
US3485625A
Cited
US3574072A
Cited
US3808403A
Cited
US4210704A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-29 | 1987-02-28 | 1987-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-29 | 1991-02-28 | 1991-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-29 | 1995-02-28 | 1995-08-30 | $7700.00 | Window Closed / Lapsed |